NATIONAL ELECTRIC POWER - REGULATORY AUTHORTY 2018-19 Performance Evaluation Report NTDC & K-Electric Contents 0 EXECUTIVE SUMMARY ................................................................................................................... ES-1 1 INTRODUCTION ....................................................................................................................................... 1 1.1 REPORTING REQUIREMENT .................................................................................................................... 1 1.2 COMPLIANCE ......................................................................................................................................... 1 1.2.1 Rule 7 of PSTR 2005 (System Voltage) ....................................................................................... 1 1.2.2 Rule 8 of PSTR 2005 (System Frequency) .................................................................................. 1 2 BRIEF ABOUT NTDC ................................................................................................................................ 2 2.1 LICENCE ................................................................................................................................................ 2 2.2 TRANSMISSION NETWORK .................................................................................................................... 2 2.3 PERFORMANCE AT A GLANCE ................................................................................................................ 3 3 ANALYSIS OF NTDC’S ANNUAL PERFORMANCE REPORT (APR) .............................................. 4 3.1 SYSTEM RELIABILITY ............................................................................................................................ 4 3.1.1 System Duration of Interruption ................................................................................................... 4 3.1.2 System Frequency of Interruption ................................................................................................ 4 3.2 SYSTEM SECURITY ................................................................................................................................. 5 3.2.1 System Collapse/Power Plants Outages ....................................................................................... 6 3.3 QUALITY OF SUPPLY .............................................................................................................................. 7 3.3.1 System Voltage............................................................................................................................. 7 3.3.2 System Frequency ...................................................................................................................... 12 4 BRIEF ABOUT K-ELECTRIC ................................................................................................................ 14 4.1 LICENCE .............................................................................................................................................. 14 4.2 TRANSMISSION NETWORK .................................................................................................................. 14 4.3 PERFORMANCE AT A GLANCE .............................................................................................................. 15 5 ANALYSIS OF KE’S ANNUAL PERFORMANCE REPORT (APR) ................................................. 16 5.1 SYSTEM RELIABILITY .......................................................................................................................... 16 5.1.1 System Duration of Interruption ................................................................................................. 16 5.1.2 System Frequency of Interruption .............................................................................................. 16 5.2 SYSTEM SECURITY ............................................................................................................................... 17 5.3 QUALITY OF SUPPLY ............................................................................................................................ 17 5.3.1 System Voltage........................................................................................................................... 17 5.3.2 System Frequency ...................................................................................................................... 18 APPENDICES ..................................................................................................................................................... 19 i List of Figures NTDC Figure 2.1: NTDC transmission system .................................................................................................................. 2 Figure 3.1: Outages hours & No. of interconnection points ................................................................................... 4 Figure 3.2: System duration of Interruption (Hrs/Point)......................................................................................... 4 Figure 3.3: Number of outages & No. of 132kV outgoing circuits ........................................................................ 4 Figure 3.4: System frequency of Interruption (Nos./circuit) .................................................................................. 4 Figure 3.5: Reported ENS...................................................................................................................................... 5 Figure 3.6: Loss of supply incidents & duration per incident ................................................................................. 5 Figure 3.7: Total number of loss of supply incidents with average ........................................................................ 5 Figure 3.8: Region wise loss of supply incidents ................................................................................................... 5 Figure 3.9: Seasonal trend of loss of supply incidents ............................................................................................ 6 Figure 3.10: Number of voltage violations (NTDC) .............................................................................................. 7 Figure 3.11: Number of voltage violations (NTDC Region wise) .......................................................................... 8 Figure 3.12: Number of voltage violations (NTDC Islamabd Region)................................................................... 8 Figure 3.13: Number of voltage violations (NTDC Lahore Region) ...................................................................... 9 Figure 3.14: Number of voltage violations (NTDC Multan Region) .................................................................... 10 Figure 3.15: Number of voltage violations (NTDC Hyderabad Region) .............................................................. 11 Figure 3.16: Highest voltage recorded at 500 kV grid stations under Normal condition ..................................... 11 Figure 3.17: Highest voltage recorded at 220 kV grid stations under Normal condition ..................................... 11 Figure 3.18: Lowest voltage recorded at 220 kV grid stations under Normal condition ...................................... 12 Figure 3.19: Highest frequency recorded (Hz) ..................................................................................................... 13 Figure 3.20: Lowest frequency recorded (Hz) ...................................................................................................... 13 K-Electric Figure 4.1: KE transmission system ..................................................................................................................... 14 Figure 5.1: Outages hours & No. of interconnection points ................................................................................. 16 Figure 5.2: System duration of Interruption (Hrs/Point)....................................................................................... 16 Figure 5.3: Number of outages & No. of 132kV outgoing circuits ...................................................................... 16 Figure 5.4: System frequency of Interruption (Nos./circuit) ................................................................................ 16 Figure 5.5: Reported ENS.................................................................................................................................... 17 Figure 5.6: Loss of supply incidents & duration per incident ............................................................................... 17 Figure 5.7: Total number of loss of supply incidents with average ...................................................................... 17 Figure 5.8: Number of voltage violations (NTDC) .............................................................................................. 17 Figure 5.9: Highest frequency recorded (Hz) ....................................................................................................... 18 ii List of Tables NTDC Table 3.1: Loss of supply incidents, average ENS, duration & financial impact per incident ................................ 5 Table 3.2: System collapses/major disturbances .................................................................................................... 6 Table 3.3: Number of voltage violations (NTDC Region wise) ............................................................................